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Fixed-Time Event-Triggered Output Consensus Tracking of High-Order Multiagent Systems Under Directed Interaction

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    This study introduces a novel event-triggered observer and controller for high-order multiagent systems (MASs). These innovations ensure fixed-time consensus tracking while reducing communication updates and avoiding Zeno behavior.

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    Area of Science:

    • Control Theory
    • Systems Engineering
    • Robotics

    Background:

    • Multiagent systems (MASs) require efficient coordination for tasks.
    • Traditional consensus algorithms often demand frequent communication and continuous monitoring.
    • Achieving consensus in fixed-time is crucial for time-sensitive applications.

    Purpose of the Study:

    • To develop a fixed-time event-triggered distributed observer for high-order MASs.
    • To design an event-triggered adaptive dynamic surface fixed-time controller.
    • To achieve practical fixed-time output consensus tracking under directed graphs.

    Main Methods:

    • Lyapunov function approach for proving observer convergence.
    • Design of novel event-triggered distributed observer and triggering functions.
    • Development of an adaptive dynamic surface fixed-time controller.

    Main Results:

    • Fixed-time convergence of the distributed observer is proven.
    • Zeno behavior is excluded in the proposed observer.
    • Effective fixed-time output consensus tracking is demonstrated via simulations.

    Conclusions:

    • The proposed event-triggered scheme reduces communication and control update frequency.
    • The approach avoids continuous monitoring and eliminates observation error effects.
    • The method achieves practical fixed-time output consensus tracking for high-order MASs.